similar principles and along tbe same lines. The majority of them receive their heat 

 from lamps that burn kerosene. In some places gas is being used for heating pur- 

 poses. Recently a few makes have been constructed with electrical attachments. 

 However, the employment of gas or electricity in incubators depends largely upon 

 local conditions, and these methods of hatching chicks will not be discussed here. 

 The hot-air and hot-water incubators usually hatch with equal success, each 

 involving the same general principles, with slight variations of minor importance. 



THE LOCATION OF THE INCUBATOR. 



Much depends upon the location of the incubator, for the reason that influences 

 external to the incubator may influence the hatch. The incubator-cellar should be 

 well ventilated, thus providing for an abundant supply of oxygen for the developing 

 chicks. Although fresh air is essential, direct draughts through the cellar should be 

 avoided. The cellar should be clean and sweet smelling. 



The most successful incubator-rooms are built half in the ground and half above 

 ground, because of the more equable temperature obtained. A house 4 feet in the 

 ground and 3 or 4 feet above makes an ideal place for the incubator. Where this 

 is not possible, the incubator-house should be built on the north side of a house, barn, 

 or building, and the windows placed on the north side. 



A house-cellar, providing it is sweet and clean, may be utilized. However, where 

 so done, it is advisable to apply to the fire insurance company for permission, as some 

 companies will not allow incubators to be operated in a house-cellar or room. 



A-shape colony bouse, suitable for growing stoc k. Tbe writer has found that this type of house 

 affords too much surface to the sun's rays durln g the day. However, when placed under trees It 

 is satisfactory. 



THE OPERATION OF THE INCUBATOR. 



The degree of success in incubation depends to a great extent upon the operation 

 of the incubator for the first week. It may be well to point out that it is very 

 desirable, especially for amateurs, to follow the directions of the manufacturer more 



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